Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses)) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	$ (4)	$ 40	$ (97)	$ 111
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(9)	(10)	(19)	(44)
Foreign Exchange Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	(7)	40	(100)	116
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	(11)	(11)	(20)	(43)
Forward points recognized in other income (expense), net		(1)	(5)	(3)
Undesignated derivatives recognized in Other income/(expense), net	(1)	1	(2)	6
Commodity Contract [Member]
Derivative [Line Items]
Effective portion recognized in other comprehensive income/(loss), net of taxes	3		3	(5)
Effective portion reclassified out of Accumulated other comprehensive income/(loss) into earnings, net of taxes	$ 2	$ 1	$ 1	$ (1)

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The gain relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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